package servlet;

import util.StringUtil;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.sql.*;

/**
 * @author MissChen
 * @date 2024年04月23日 13:55
 */
@WebServlet("/modifyEmp")
public class ModifyEmpServlet extends HttpServlet {
    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        String id = request.getParameter("id");
        String name = request.getParameter("name");
        String salary = request.getParameter("salary");
        String gender = request.getParameter("gender");
        String edu = request.getParameter("edu");
        String[] hobbies = request.getParameterValues("hobbies");
        Connection conn = null;
        PreparedStatement ps = null;
        ResultSet rs = null;
        String url = "jdbc:mysql://127.0.0.1:3306/web?useUnicode=true&characterEncoding=utf-8";
        try {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection(url, "root", "root");
            String sql=new StringBuffer()
                    .append(" update t_emp ")
                    .append(" set ")
                    .append(" name=?,salary=?,gender=?,edu=?,hobbies=?  ")
                    .append(" where id=? ")
                    .toString();
            ps=conn.prepareStatement(sql);
            ps.setString(1,name);
            ps.setDouble(2,Double.parseDouble(salary));
            ps.setString(3,gender);
            ps.setString(4,edu);
            ps.setString(5, StringUtil.arrayToString(hobbies));
            ps.setInt(6,Integer.parseInt(id));
            ps.executeUpdate();
            response.sendRedirect("findAll");

        } catch (ClassNotFoundException e) {
            e.printStackTrace();

        } catch (SQLException e) {
            e.printStackTrace();

        }finally {
            if(conn!=null){
                try {
                    conn.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
            if(ps!=null){
                try {
                    ps.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
            if(rs!=null){
                try {
                    rs.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }

    }
}
